[ 800.100148][ C3] irq 4: nobody cared (try booting with the "irqpoll" option)
[ 800.100719][ C3] CPU: 3 PID: 8894 Comm: perl Not tainted 6.8.0-virtme #1
[ 800.101065][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 800.101664][ C3] Call Trace:
[ 800.101881][ C3]
[ 800.102033][ C3] dump_stack_lvl+0x82/0xd0
[ 800.102328][ C3] __report_bad_irq+0x5f/0x180
[ 800.102616][ C3] note_interrupt+0x6b3/0x860
[ 800.102900][ C3] handle_irq_event+0x16d/0x1c0
[ 800.103176][ C3] handle_edge_irq+0x1fa/0xb60
[ 800.103463][ C3] __common_interrupt+0x7c/0x180
[ 800.103747][ C3] common_interrupt+0x7e/0x90
[ 800.104026][ C3]
[ 800.104172][ C3]
[ 800.104315][ C3] asm_common_interrupt+0x26/0x40
[ 800.104590][ C3] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 800.104962][ C3] Code: 10 e8 c1 88 9b fd 48 89 ef e8 f9 f8 9b fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 65 fb ef 7a <74> 0e 5b 5d c3 cc cc cc cc e8 1f f2 be fd eb dc 0f 1f 44 00 00 5b
[ 800.105987][ C3] RSP: 0018:ffffc90000b4fa80 EFLAGS: 00000286
[ 800.106337][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1068122
[ 800.106719][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8513c931
[ 800.107133][ C3] RBP: ffffffff88c211a0 R08: 0000000000000001 R09: fffffbfff10632b0
[ 800.107542][ C3] R10: ffffffff88319587 R11: 0000000000000000 R12: 00000000000003e1
[ 800.107959][ C3] R13: ffffffff88c212a8 R14: ffffffff88c211a0 R15: ffff888004320000
[ 800.108382][ C3] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 800.108736][ C3] uart_write+0x224/0x450
[ 800.108963][ C3] process_output_block+0x13e/0x790
[ 800.109243][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370
[ 800.109587][ C3] n_tty_write+0x412/0x7a0
[ 800.109872][ C3] ? __pfx_n_tty_write+0x10/0x10
[ 800.110142][ C3] ? trace_lock_acquire+0x135/0x1c0
[ 800.110413][ C3] ? __pfx_woken_wake_function+0x10/0x10
[ 800.110695][ C3] ? iterate_tty_write+0x95/0x540
[ 800.110969][ C3] ? lock_acquire+0x32/0xc0
[ 800.111231][ C3] ? iterate_tty_write+0x95/0x540
[ 800.111516][ C3] iterate_tty_write+0x228/0x540
[ 800.111794][ C3] ? tty_ldisc_ref_wait+0x28/0x80
[ 800.112076][ C3] file_tty_write.constprop.0+0x1db/0x370
[ 800.112347][ C3] vfs_write+0x9e5/0x10a0
[ 800.112548][ C3] ? __pfx___lock_release+0x10/0x10
[ 800.112757][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 800.112945][ C3] ? __pfx_vfs_write+0x10/0x10
[ 800.113137][ C3] ? clockevents_program_event+0xf6/0x300
[ 800.113324][ C3] ? ktime_get+0xb3/0x190
[ 800.113463][ C3] ? __fget_light+0x53/0x1e0
[ 800.113643][ C3] ? clockevents_program_event+0x1ea/0x300
[ 800.113879][ C3] ksys_write+0xf5/0x1e0
[ 800.114021][ C3] ? __pfx_ksys_write+0x10/0x10
[ 800.114219][ C3] do_syscall_64+0xc6/0x1e0
[ 800.114411][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 800.114652][ C3] RIP: 0033:0x7f86b3fbb957
[ 800.114838][ C3] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[ 800.115483][ C3] RSP: 002b:00007ffe9c9da3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 800.115776][ C3] RAX: ffffffffffffffda RBX: 00005605c3ce3070 RCX: 00007f86b3fbb957
[ 800.116051][ C3] RDX: 0000000000000001 RSI: 00005605c3ce3070 RDI: 0000000000000001
[ 800.116321][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000
[ 800.116589][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 00005605c3ccf590
[ 800.116862][ C3] R13: 00005605c3cb02a0 R14: 0000000000000001 R15: 00005605c3ccf590
[ 800.117152][ C3]
[ 800.117292][ C3] handlers:
[ 800.117430][ C3] [] serial8250_interrupt
[ 800.118021][ C3] Disabling IRQ #4
WAIT TIMEOUT stderr
Ctrl-C stderr
Ctrl-C stderr
WAIT TIMEOUT stderr